Front page says:
An atlas that gathers and presents information designed to help us understand continental-scale environmental issues has been released by the Commission for Environmental Cooperation (CEC). The North American Environmental Atlas is intended for use by both environmental scientists and the citizens of the United States, Canada, and Mexico. Its maps and services are designed to help the public visualize environmental topics at a continental scale.
Includes data from over 20 Federal organisations.
Material can be downloaded from:
Open by default. Copyright section states:
Data and information authored or produced by the USGS are in the public domain. National Atlas of the United States® and The National Atlas of the United States of America® are registered trademarks of the DOI. Although the content of most USGS Web pages is in the public domain, some USGS pages contain material that is copyrighted by others and used by the USGS with permission. You may need to obtain permission from the copyright owner for other uses. Furthermore, some non-USGS data, products, and information linked, or referred to, from this site may be protected under U.S. and foreign copyright laws. You may need to obtain permission from the copyright owner to acquire, use, reproduce, or distribute these materials. It is the sole responsibility of you, the user of this site, to carefully examine the content of USGS and all linked pages for copyright restrictions and to secure all necessary permissions.
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USA - National Atlas Data. No author.
Retrieved 02:28, May 24, 2013 (UTC).
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